She has degenerative eye disease. She takes all his clothes and shoes before bed and has hit him with her cane and sucker punches him in the gut in the middle of the night. Some of this is on video. She accuses the "girlfriends" of moving her clothes in her closets during the night and taking her jewelry. (My father in law shuffles as he walks.) She also shoves a chair under the door knob to keep him in his room so he won't "cheat". He stays and takes the abuse because, "she needs me to help her." What can we do? He is of sound mind and she seems to be in front of professionals.